103P

Rather than force everyone to dig through past posts to find info on Comet 103P/Hartley, the latest lightcurves and images will also be posted on here.

Lightcurves

Lightcurve 1 : Apparent magnitude of Comet 103P versus time from perihelion. For comparison, the expected brightness of the comet (based on observations from the 1997 return) is also plotted (dashed line). Visual magnitude estimates (red circles) are from the ICQ, CometObs and COBS while the CCD measurements (blue diamonds) are by Carl Hergenrother.

Lightcurve 2 : Heliocentric magnitude of Comet 103P versus time from perihelion. Magnitudes are normalized to a distance of 1 AU from Earth and Sun and to o° phase angle. For comparison, visual magnitude observations from the 1991 return (dark grey boxes) and 1997 return (light grey circles) are also plotted. Visual magnitude estimates (red circles) are from the ICQ, CometObs and COBS while the CCD measurements (blue diamonds) are by Carl Hergenrother.

Lightcurve 3 : Pre-perihelion heliocentric magnitude of Comet 103P versus heliocentric distance. Magnitudes are normalized to a distance of 1 AU from Earth and Sun and to o° phase angle. For comparison, visual magnitude observations from the 1991 return (dark grey boxes) and 1997 return (light grey circles) are also plotted. Visual magnitude estimates (red circles) are from the ICQ, CometObs and COBS while the CCD measurements (blue diamonds) are by Carl Hergenrother.

Lightcurve 4 : Post-perihelion heliocentric magnitude of Comet 103P versus heliocentric distance. Magnitudes are normalized to a distance of 1 AU from Earth and Sun and to o° phase angle. For comparison, visual magnitude observations from the 1991 return (dark grey boxes) and 1997 return (light grey circles) are also plotted. Visual magnitude estimates (red circles) are from the ICQ, CometObs and COBS while the CCD measurements (blue diamonds) are by Carl Hergenrother.